1882.] REY. O. P, CAMBRIDGE ON NEW ARANEIDEA. 429 
orange-yellow colour, excepting a large black central spot on the 
sternum. The sides of the thorax are considerably rounded, and 
the normal indentations marking off the caput from the thorax are 
strongly marked. Along the median line of the caput are several 
bristly hairs directed forwards. 
The eyes are very unequal in size for this family ; those of the 
fore central pair are much the larger, and form a line longer than 
those of the hind central pair, and have their visual axis directed 
forwards and outwards; these last are rather wider apart than each 
is from the hind lateral on its side. 
The palpi are short, the cubital and radial joints exceedingly so. 
The digital joint is large, and of an abnormal form, somewhat 
rounded at its base; it has its fore extremity considerably produced 
into a rather narrow and tapering form; its extremity is furcate, 
one point of the furcation being longer than the other. The palpal 
organs are rather complex and highly developed; connected with 
them is a tortuous, somewhat convoluted, pale-yellowish tapering 
spine of immense length ; and its long slender filiform point extends 
very prominently outwards. One corneous process of the palpal 
organs is long, prominent, and tapering, and has its extremity, 
which projects outwards, notched. 
The abdomen is of a pale-yellowish luteous hue, thinly clothed 
with hairs; its upper posterior extremity has a large black spot, on 
each side of which below (towards the spinners) is another; two 
others are placed (one on each side) towards the fore part of the 
upperside; and a sixth is underneath, just in front of the spinners. 
The spinners are very short and compact. 
A single example of this remarkably distinct species was con- 
tained in Mr. Traill’s Amazon collection. 
Curysso, g. n. 
Cephalothorazr much like that of Theridion, small, somewhat 
depressed, short-oval in form, with very slight lateral marginal con- 
striction at caput. 
Eyes as in Theridion. 
Legs moderately long, slender, 1, 4, 2, 3, furnished with hairs 
only. 
ee small, not very strong, straight and vertical. 
Maxille of moderate size, pointed at their inner extremities, and 
inclined towards the Jabium, which is short and of a somewhat semi- 
circular form. 
Abdomen large, the posterior extremity (particularly in the female) 
produced into a long and tapering continuation, varying, however, in 
its length in different individuals. 
This genus is nearly allied to Argyrodes, appearing to form. a 
gonnecting link between it and Theridion. 
CHRYSSO ALBOMACULATA, Sp.n. (Plate XXX. fig, 6.) 
Adult male, length 13 line ; female, 24 lines. 
The whole of the fore part of this pretty little Spider is of an oranges 
